Carbonyl fluoride

  • Carbonic difluoride
  • Fluorphosgene
  • Carbon oxyfluoride
  • Carbon difluoride oxide
  • Difluoroformaldehyde
Formula
COF2
Structure
Description
A colorless gas with a pungent odor.
Uses
Chemical intermediate in organic synth, eg, fluorinated alkyl isocyanates.

Registry Numbers and Inventories.
CAS
353-50-4
EC (EINECS/ELINCS)
206-534-2
RTECS
FG6125000
RTECS class
Other
UN (DOT)
2417
Merck
12,1868
Beilstein/Gmelin
1039 (G)
RCRA
U033
Swiss Giftliste 1
G-4597
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CFO
Formula mass
66.01
Boiling point, °C
-82
Vapor pressure, mmHg
29200 (25 C)
Vapor density (air=1)
1.139
Density
1.139 (liquid)g/cm3 (-114 C), 1.388 (solid)g/cm3 (-190 C)
Solubility in water
Decomposes
Partition coefficient, pKow
0.94
Heat of vaporization
18.0 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Attempt to stop leak if without undue personnel hazard. Do not use water. Neutralize spilled material with crushed limestone, soda ash, or lime. Apply water spray or mist to knock down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Neutralize with agricultural lime (CaO), crushed limestone (CaCO3) or sodium bicarbonate (NaHCO3). Water spill: Neutralize with agricultural lime (CaO), crushed limestone (CaCO3), or sodium bicarbonate (NaHCO3).
Stability
Cylinders may explode if subjected to the heat of a fire.
Incompatibilities
Incompatible with water, with bases (including amines), with strong oxidizing agents, with alcohols Reacts violently with hexafluoroisopropylideneaminolithium May react vigorously or explosively
Decomposition
Decomposition in water and alc when heated to decomposition it emits toxic fumes of carbon monoxide and hydrogen fluoride.

Fire.
Flash Point,°C
-74
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Keep run-off water out of sewers and water sources.
Fire potential
Nonflammable.
Hazards
Fire will produce irritating, corrosive and/or toxic gases. Vapors from liquefied gas are initially heavier than air and spread along ground. May react violently with water. Containers may explode when heated
Combustion products
Toxic gas is generated when heated.
Health
1
 
Flammability
2
 
 
Reactivity
3
 

Health.
Exposure limit(s)
TLV: 2 ppm; 5.4 mg/m3 (as TWA); 5 ppm; 13 mg/m3 (as STEL) (ACGIH 1997). NIOSH REL: TWA 2 ppm (5 mg/m3) ST 5 ppm (15 mg/m3)
Poison_Class
1
Exposure effects
Extreme malaise and weakness may precede death. No data were available to assess the potential effects of exposure to this agent during pregnancy or lactation. <br>No data were available to assess the teratogenic potential of this agent.
   Inhalation
Shortness of breath, respiratory irritation, bronchitis, and pulmonary edema may occur.
   Skin
Skin irritation may be present.
   Eyes
This substance is a general mucous membrane irritant and may irritate the eyes, nose, throat, and mouth.

First aid
 
   Ingestion
Due to the nature of this substance, toxicity resulting from oral exposure is highly unlikely. Treatment should include recommendations listed in the inhalation exposure section when appropriate.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Effects may be delayed.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Treatment should include recommendations listed in the inhalation exposure section when appropriate.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
2417
Response guide
Hazard class
2.3
PRTC
T
USCG CHRIS Code
CXY
 
Std. Transport #
4920559